| 摘要 |
PROBLEM TO BE SOLVED: To provide an uninterruptive power unit by which a faulty converter can be maintained, without lowering the cooling capacity during power supply and also the opening and closing of a circuit during power supply can be performed safely and easily. SOLUTION: This power unit is provided with a lid 41 which blocks a ventilation path inside an air duct 12, and a pin 49 and a guide pin 48 are fixed to the lid 41. The lid 41 moves vertically along the guide hole 50 provided in the air duct 12 and opens and closes a ventilation port 42. A slide plate 47 outside the air duct 12 is attached to the rail 44 for mounting and removing of a power converter freely moving the in the forward and backward direction via a guide hole 45. The guide pin 48 pieces the slant guide hole 52 in the slide plate 47 and converts the motion of the lid 41 into vertical motion by the forward and backward motion of the slide plate 47, and opens the ventilation port 42 of the air duct 12. The connector 26 of a power converter 20 engages with a copper bus bar and is electrically connected with an external circuit. |
